Gas heating apparatus



J. A. HARDEL.

GAS HEATING APPARATUS.

APPLICATION FILED NOV 26, I920.

Patented Mar. 28, 1922.

2 SHEETS-SHEET I.

l. A. HARUEL.

GAS HEATING APPARATUS.

APPLICATION FILED NOV- 26, 1920- 1,410,806, Patented Mar. 28, 1922 2 SHEETSSHEET 2.

Fig 3 have invented certain JEAN AMEIDEE HARDEL, OF PARIS, FRANCE.

T its.

ens HEATING APPARATUS.

Specification of Letters Patent. Pat t d 23, 192% Application mean vcmbtr 26, 1920'. Serial No. 426,475.

To all whom it may concern: I i

Be it known that I, JEAN 'AMEDEE HARDEL, engineer, citizen of the Republic of residing in Paris, France, (and whose postotlice address is 63 Boulevard Malesherbes,) new and useful Improvements in Gas Heating Apparatus; and I do hereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable othersskilled in the art to which it appertains to make and use'the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification. The known gas heating devices have among [other inconveniences that of affording a very small radiatingsurface as compared with the amount of gas consumed, and. in

the case of apparatus provided with an off I take passage, the products "of combustion are caused. to draw on? a considerable quantity of heat. passage, the products of combustion rise to the upper part of the room; and in both cases the apparatus will radiate but little heat upon its own level.

Moreover, with the, greater part of such devices the combustion is incomplete, wherep by they are rendered inconvenient and even dangerous, and this circumstance'has hitherto prevented the Widespread use of Y this method of heating.

This invention relates to a new form of gas heating. apparatus wherein theradlat- 'ing surface is of a very extensive nature,

while at the same time it' affords a complete combustion, in such manner that the IHZIJOI part of the heat producedis given out in. the fornr of radiation,"whereby the appa-v ratus will give rise to a powerful and veilicient heatingacti'on around the same.

This inventionis characterized in prime.

ciple in that the combustion takes placeat the surface of a wire gauze member, acting as part of the wall of an intake chamber for gas and air mixture, said wire'gauze being heated to incandescence and forming the radiating surface of the apparatus."

The accompanying drawing shows embodiments of this invention by way of example.

Fig. 1 1s a vertical sectlon of a form of construction of the apparatus. Fig. 2 is a like section showing a modified orm of the same.

France,

With devices having no such,

Fig. 3 a section representing an im proved apparatus according to this invent 10n.-

As shown in the drawings, the apparatus represented in Fig. 1 comprises a Bunsen burner a of the current type, having mounted thereon a washer I); this latter supports a truncated cone or cylinder 0 of wire gauze, identical'with like members'employed "for miners safety lamps. The Bunsen burner is caused to enter intosaid truncated cone shaped member, and it is provided. with a set of apertures 64 of variable form through which the gas may issue'from the Bunsen burner. .Uponsaid burner is disposed a member (Z the shape whereof is clearly shown in Fig. l, and it is preferably constructed of refractory material;

The operation of this device is as follows:

The mixture of gas and air supplied by saidBunsen burner issues from said apertures a and occupies. the interior of. the truncated cone 0, being guided and distributed over the entire surface of said wire gauze member by the. member d. If there- I, fore a lighted match it presented to the outer part of the wire 7 lighted. audit is observed that the combus tion will take place in a uniform manner upon the entire surface.

toincandescence and produces an energetic consum tion of as is ver small. '3

gauze c, the gasp'will be g It is alsoreinarked that said wlre gauzeis immediately raised The hereinbefore described apparatus may be employed 1n an isolatedmanner, and 1t (has the great advantage that it may be in stantly mounted uponthe support or tubeshaped extremity supplying the gas to a lighting fixture offanykind, the burner devices may also be mounted inajrow upon the different outlet necks of a. gas .teedmg range. It is especially applicable to gasradiatorswhich are already installed, by sub stituting the present device for theusual refractoryheatmg members, andithis will afford a considerable mcr'easem theheating power of such apparatus.

F ig. 2 relates to another form of construction,l;aifordinga radiator of special disposition. In this case the apparatus comthereof being temporarily removed. Such 7 known apparatus,by p

erable incandescent surface whlch 1s here asbestos bands,

chamber 7 the bottom and sides whereof being constituted by the framework of the apparatus and the front -.part by. a wire gauze sheet 0. This latter is secured in place by means of the strips 9 and suitable screws; Tight fitting can be obtained by the use of This method of mounting permits of readily replacing the wire gauze member. r V

An outlet neck It provides for the discharge of the burnt gases. The surface (Z of the main framework is disposed in such manner as to secure an even distributioncf gas upon the entire surface of the wire gauze. It may be made separately andfor instance of moulded refractory earth. Y The apparatus thus constructed will. op-

erate in the same manner as the device shown in Fig. 1,, and itpossesses a heating power which is much superior to that afforded by reason of the cons1dprovided. On the other hand, the entire combustion is effected upon a surface which is irected towards the side to be heated,

thus still further increasing the radiating power. This apparatus can be caused to 7 produce heat with a small consumption of gas, 7 V V l-Flg. 3, represents'an improved device haying, the. following characteristics r h g s in et Orifice is adjustable Firstly:

milled cap. z provided at will by meanslof p with a central orifice j and screwed upon the 35v pointed portion or bottom plug it "which terminates in the needle valve Z.

. In this manner, the milledcap i ma-y be operated to control the section of the outlet constituted by the annular space betweenthe orifice in the cap '5 and the needle portion 7/.

V Secondly, the tube m is provided with two rows of superposed apertures n and 0 between which is disposed the truncated cone a third time when imp nging upon a tube 7* having therein a This arrangement. has

shaped member 72-. I

the gas and an twice the effect of mixing in succession, and this mixture is agitated the conical endg of member (I which latter has the form-indicated; in Fig. 3 andlis supported large apertures. a

Both the tube m andthe, tube 1" arejengaged in .a refractory earth; body 8 provided This arrangement has the heatingrof the out inconvenience, I

. It will be understood that. the cone 0 could also b m d of wire gauze of any appropriate metal, suahas iron, coppe nickel, ac...

This in enti n is not imited to. the use ofwire gauze properly socalled and anysuitable perforated surface having an equivalent necessary cerns the shape, slze, material or details of plurality of r 1 wire gauze, and without permitting the flame to expand in the interior, and consequently the orifices must be very smalls.

Theapparatus according to this invention may operate not only with illuminating gas,

but also with all other suitable combustible gases such as acetylene, water gas, alcohol, gasoline and the like. 7 o

The hereinbefore mentioned arrangements are given only by way ofexample, and all modifications may be made as con constructioni without departing from the principle of this invention. I claim- 1 V I p ,1. A, gas heating device comprising incombination-a burner of the Bunsen type, a refractory member mounted above said burner and wire gauze spaced from said refractory member forming a chamber between said;

member and gauze into which said burner discharges, combustion taking place on the exteriorsurface of said gauze.

2. A gas heating device comprising in comb natlon a burner, a member of refractory material above the burner, a wirergauze surrounding the refractory material and spaced therefrom, saidburner discharging into the chamber betweensaid gauze and member.

3. A gas heating apparatuscomprising any external wire gauze casing 1n form of a reversedcap, a nozzle for theadmission of gas,

.a milled cap screwed onthe nozzle for regulating the supply of gas, a tube with two superposedranges of apertures for the admission of the air, a throttling cone between the two rows of air apertures for intimately mixing the air andthe. gas, a refractory earth body disposed centrally. of the wire gauze casing,,a cone at'the bottom of the said refractory earth body, and an inlet chamber for the air and gas between the wire gauze casing and the central refractory body. 4. A gas heat ng apparatus comprising an external wire gauze caslng, a nozzle for the admission of gas, regulating means on the said nozzle for varyingthe admission of gas, a: tube located upon said nozzle and provided -with twosuperposed rows of apertures for the supply of air, a throttling member between the two rowsjof air apertures, a refractory earth, ring resting upon the said apertured tube,,a second tube with apertures carried bythe refractory earth ring, a centrialrefractory earth body inside, the wire gauze casing, acone at the bottom of said body, and an inlet chamber for the air and gas between therefractory earth 'body and the wire gauze casing.

5.,A gas heating device comprising a gas;

burner, a frusto-conical member of non-combustible material having its smaller end mounted on the top of said burner a frustoconical \vire net surrounding said member and a support on said burner for the lower larger end of said net, said burner discharging into the tapering chamber between the 

